1.diketahui p= -100+2Q p=400 ditanya elatisitas penawaran 2.dikethaui Q=50-1/2p p=80 ditanya elastisitas permintaan #tolong bantuin pake caranya makasih

1.
P = -100 + 2Q
400 = -100 + 2Q
2Q = -500
Q = -250

Es = P' × P/Q
= 2 × 400 / -250
= -3,2 (Inelastis)

2.
Q=50-1/2p
Q = 50 - 1/2(80)
Q = 50 - 40
Q = 10

Ed = Q' × P / Q
= 1/2 × 80/10
= 8/2
= |4|
=-4 (Inelastis)